SigmaHQ/rules/windows/process_creation/win_susp_disable_ie_features.yml

title: Disabled IE Security Features
id: fb50eb7a-5ab1-43ae-bcc9-091818cb8424
status: experimental
description: Detects command lines that indicate unwanted modifications to registry keys that disable important Internet Explorer security features
references:
    - https://unit42.paloaltonetworks.com/operation-ke3chang-resurfaces-with-new-tidepool-malware/
tags:
    - attack.defense_evasion
    - attack.t1562.001
    - attack.t1089      # an old one
author: Florian Roth 
date: 2020/06/19
logsource:
    category: process_creation
    product: windows
detection:
    selection1:
        CommandLine|contains|all:
            - ' -name IEHarden '
            - ' -value 0 '        
    selection2:
        CommandLine|contains|all:
            - ' -name DEPOff '
            - ' -value 1 '
    selection3:
        CommandLine|contains|all:
            - ' -name DisableFirstRunCustomize '
            - ' -value 2 '
    condition: 1 of them
falsepositives:
    - Unknown, maybe some security software installer disables these features temporarily
level: high